A bilingual (English and Latin) royal writ from King Edward II dated 15 December 1311, addressed to sheriffs and bailiffs of the northern English counties (Chester, Lancaster, Cumberland, Westmoreland). The writ commands assistance to Gilbert Makasky, seneschal of Anthony de Bek (Bishop of Durham), in provisioning and defending the Isle of Man against an anticipated invasion by Robert Bruce's fleet. The document is relevant to understanding the strategic and military importance of the Isle of Man during the Scottish Wars and the Crown's concerns about Scottish naval power.